baxi 105e combi boiler overflow problem, please help!!

[qwerty7685]

i have just turned the heating on in this property for the first time since moving here at the begining of last month and in my annoyance of the bloody thing not working i starting messing about with thing i hadn't tried turning, i know bad idea but none the less it's done now.

i got the heating working but not until after i turned the tap on which i think i've worked out is the system fill pipe, after which i noticed a lot of extra noise. a little while later i went outsode to see that the overflow pipe was streaming constantly (cold), but if i turn the thermostat on for heating or hot water the over flow becomes tepid.

i have read all the manuals online and searched forums for help, and i can not find a thing to help. the presure is currently about 2.2. the only way to stop the noise and water flow is to turn the main water input.

Also last night about middnight i turnned the water off and opened all the taps in the house thinking that may releave presure or something?

please help i have no idea what to do, i have no water, a 35weeks pregnant girlfriend moaning and stressing that i've broke it, and no money to get an engineer out!!

Feel free to ask for more info

Thanks in advance

 

[misterdubya]

The central heating system pressure should be approx 1 - 1.4 bar with the system cold. Drain some pressure out of the system - opening up cold taps wont work.

NEVER leave the the cold main valve 'on' into the boilers heating system.
You may need a new PRV as it sounds as though you have broken yours by over pressurining.

Hope this helps.

Mr. W.

 

[qwerty7685]

The central heating system pressure should be approx 1 - 1.4 bar with the system cold. Drain some pressure out of the system - opening up cold taps wont work.

NEVER leave the the cold main valve 'on' into the boilers heating system.
You may need a new PRV as it sounds as though you have broken yours by over pressurining.

Hope this helps.

Mr. W.

thanks for the auick respoince. a couple of questions.... how do i drain pressure? and whats a PRV?

Cheers

 

[misterdubya]

To drain the pressure, attach a hose to a drain off on the heating system and open up.

It will look like this......... www.bes.co.uk/products/098.asp at the bottom of the page.

PRV - Pressure Relief Valve. Basically, a safety device that allows water to exit the heating system if the pressure gets too high (over 3 bar).

Mr. W.